#!/bin/sh
# $Id$
## @file
# Post flight installer script for the VirtualBox OS X kernel extensions.
#

#
# Copyright (C) 2007-2020 Oracle Corporation
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License (GPL) as published by the Free Software
# Foundation, in version 2 as it comes in the "COPYING" file of the
# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
#

set -e

# Setup environment.
export PATH="/bin:/usr/bin:/sbin:/usr/sbin:$PATH"

unload_service()
{
    ITEM_ID=$1
    ITEM_PATH=$2
    FORCED_USER=$3

    loaded="NO"
    test -n "$(sudo -u "$FORCED_USER" launchctl list | grep $ITEM_ID)" && loaded="YES"
    if [ "$loaded" = "YES" ] ; then
        echo "Unloading previously installed service: $ITEM_ID"
        sudo -u "$FORCED_USER" launchctl unload -F "$ITEM_PATH/$ITEM_ID.plist"
    fi
}

load_service()
{
    ITEM_ID=$1
    ITEM_PATH=$2
    FORCED_USER=$3

    echo "Loading newly installed service: $ITEM_ID"
    sudo -u "$FORCED_USER" launchctl load -F "$ITEM_PATH/$ITEM_ID.plist"
}

unload_service "org.virtualbox.additions.vboxservice" "/Library/LaunchDaemons" "root"
unload_service "org.virtualbox.additions.vboxclient" "/Library/LaunchAgents" "${USER}"

items="VBoxGuest"
for item in $items; do
    kext_item="org.virtualbox.kext.$item"

    loaded="NO"
    test -n "$(kextstat | grep $kext_item)" && loaded="YES"
    if [ "$loaded" = "YES" ] ; then
        echo "Unloading $item kernel extension..."
        kextunload -b $kext_item
    fi
done

echo "Updating kernel cache (should trigger loading of new modules)."
touch "/System/Library/Extensions/"
kextcache -update-volume / || true

load_service "org.virtualbox.additions.vboxservice" "/Library/LaunchDaemons" "root"
load_service "org.virtualbox.additions.vboxclient" "/Library/LaunchAgents" "${USER}"

echo "Warning: If VBoxService adjusts the time backwards (because of --biossystemtimeoffset), the installer may hang."
echo "Done."

exit 0;
